Scaffold-jack.



1; HEHLER. SCAFF OLD JACK. UCAT ION FILED OCT. 12 19M.

APP

Patented July 6, 1915.

naw W01 Jaseph Fiehler,

UNITED snares PATENT onnion.

vJOSEPH FIEHLER, OF POTTER, NEBRASKA.

SGAFFOLD-JACK.

Specification of Letters Patent.

Patented July 6, 1915.

Application filed October 12, 1914. Serial No. 866,380.

may be readily secured in position when de-"' sired to provide for the speedy erection of the scaffold. The main object of the present invention is the provision of a scaffoldjack or support in which the parts are constructed to permit a convenient and speedy arrangement in scaffold supporting position and folclable into small compass when not desired for use. The invention in the preferred form of details will be described in the specification, reference being had particularly to the accompanying drawings, in which v Figure 1 is a perspective view of the improvement. Fig. 2 is a side elevation of the same.

In constructing the improved'jack, I provide a supporting. bracket 1, comprising a plate-like member of substantial thickness having outstanding spaced ears 2 to receive a supporting bolt or bar 3. The ends of the plate beyond the ears are preferably of double thickness and upturned at the ends so as to provide flanges serviceable to receive the blows of the hammer or the like in removing the bracket from its position on the wall.

Removably secured upon the bolt 3 are hangers 4 comprising strips of appropriate length, having their respective ends given a half turn as at 5 and 6, so that the upper ends may be connected to the bolt, and the strips hang fiat below the bracket. One of the hangers intermediate its ends is provided with a spacing bar 7 pivotally connected thereto at 8, the free end of the bar having av series of notches 9 adapted to engage a pin 10 projecting from the other hanger, whereby the lower ends of the hangers may be spaced apart as desired and held in such spaced relation. The spacing bar 7 is formed intermediate its ends with an opening 11 for a purpose which will later appear. Brace bars 12 are pivotally connected to the lower end 6 of the hanger bars, the upper ends of the brace bars being provided with a connecting pin 13. Floor bars 14 are pivotally supported on the bolts 3 of the bracket and are formed attheirfreeends with a series of notches 15, in one of which;

is adapted to cooperate with the pins or projections 13 of the brace bars.

In mounting the structure the bracket is firmly secured to the wall or other upright portion beyond which it is desired to erect the scaffold. .In this position, the hangers are pendant from the upright, and are secured against lateral swinging byfa securing means such as a nail or the like, driven through the opening 11 in the spacing bar and into the structure.

The brace bars are v extended outwardly to the desired distance and the floor bars interlocked therewith as described. The platform or parts forming I i 7 small package; -It is of course understood that any number of jacks maybe used in' supporting a particular scaffold, in accord ance with the length requirements thereof.

\Vhat is claimed is:

A scaffold jack including a bracket adapted to be secured to a structure and provided with spaced ears projecting at right angles to the plane of the bracket, a pivot 'bolt uniting the ears, a floor bar removably mounted on said bolt, hangers pivotaily mounted on the bracket intermediate the ears, a spacing bar pivotally connected to one hanger below the bracket and adapted for adjustable connection to the other hanger, to adjustably space the lower ends of the hangers, brace bars pivotaily connected to the lower ends of .thehangers, a In testimony whereof I aflix my signature bolt uniting the forward ends of-the brace in presence of tWo Witnesses. l

bars, the forward end of the floor ba-ri being I r JOSEPH FIEHLER.

formed w 1th a senes of notches for c00pera-' 5 tion With a bolt 'Whereby to provide adjust- Witnesses:

able connection between the brace bar-and D. N. SHULTZ, floor bar. I JOHN W. MUELLER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

' Washington, D. C. 

